Lubricator.



J. MORROW.

LUBRlCATOR.

APPLICATION FILED MAY 6. 19I6.

Patented Sept. 12, 1916.

INVENTOR Jo/m Mofifiom JOHN MORROW, OF DENVER, COLORADO.

LUBBIGATOR.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed tra 6, 191 Serial N6. 95,786.

To all whom it may concern:

Be it known that I, JOHN MORROW, a citizen of the United States, residing atDenver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Lubricators, of which the following is a specification.

This invention relates to improvements in lubricators of the type shown and described in my United States Patent No. 1,110,706, issued September 15, 1914.

The principal object of the present invention resides in providing in a lubricator composed of a fixed housing member and a spring-pressed piston member which together form an oil receptacle, a spring-actu ated piston which forms part of the working face of the primary piston, and which when the latter has reached the end of its inward movement continues feeding the lubricant onto a bearing to which the housing member is applied.

My invention has been illustrated in the accompanaying drawings in the various views of which like parts are similarly desighated, and in which,

Figure 1 represents an elevation of my improved'lubricator in its operative position with relation to a bearing to which it is applied, Fig. 2, a longitudinal axial section of the device showing the primary and secondary pistons in the positions they occupy be-, fore the piston-member of the receptacle has commenced its feeding motion, and Fig. 3, a section similar to that of Fig. 2, showing the position of the parts after the primary piston has reached the end of its inward movement and the secondary piston is feeding the lubricant toward the bearing with which the outer member of the lubricator is connected.

Referring to the drawings, my improved lubricator consists of two open-ended telescoping members 2 and 3. The outer member hasan exterior thread 4 and at its end opposite to that at which it connects with the engine part to which the lubricator is applied, a hexagonal head 5 for the application of a wrench.

the use of the device the outer member 2 is fixed in operative relation to a bearing by screwing its threaded portion into a cooperativelyuthreaded opening of the part 6 to which it is applied, by means of a wrench fitt'edon the hexagonal head, and the memher is subsequently locked in its adjusted position by the use of a nut 7 screwed upon the exterior portion of its thread.

The bore of the member 2 is at the outer end thereof reduced in diameter to provide a throat 8 in which the inner member 3 is slidably fitted. The member 3 has at its end extending in the outer member 2, an enlargement 9 which is exteriorly recessed to receive a packing ring 10. The enlargement which in the operation'serves as a piston, fits snugly in the bore of theouter member and pro vides a shoulder for the engagement of a spring 12 which is coiled in the space between the two telescoping members and abuts against the offset formed in the outer member by the throat at the outer end of the same.

Slidingly fitted in the bearing of the tubular piston member 3 is a secondary piston 13 which preferably is made in the form of an inverted cup. A spring 14 secured at one of its ends to the piston 13 is disposed in the bore of the tubular member-3 and is at its opposite extremity attached to a cotter 15 which projects'transversely of said member through apertures adjacent the upper end of the same.

A packing 16 fittedv in a recess of the throat 8 of the'outer member to engage the exterior surface of the piston-member 3, serves in the operation of the invention to prevent the lubricant from flowing past the piston into the space between the members and to confine air within said space. When the inner member is in a feeding position, this confined body of air forms a pneumatic cushion to counteract the centrifugal force which when thepart 6 to which the lubricator is applied, rotates at a high velocity, tends to move the piston-member outwardly and thereby opposes its feeding motion by action of the spring 12.

In the use of my improved lubricator, the oilreceptacle provided by the two telescoping members is filled with a lubricant until both the primarv piston-member and the secondary piston are placed in their outermost positions as shown in Fig. 2. The spring 12 being stronger than the other spring, compels the piston member 3 to move inwardly as rapidly as the lubricant is fed onto the bearing of the part to which the lubricator is applied, the secondary piston remainingin its outer position to form a part of the impellent surface, and a closure for the tubular bore of the sliding member 3. After the lusubsequent feed bricant contained in'the receptacle has been fed onto the bearing to the extent that the piston-member has reached the end of its in-- ward movement, the lubricator still contains sufficient lubricant to continue its supply to the bearing for a considerable period. The of the lubricant is effected by the secondary piston which by expansion of its spring is moved inwardly until the entire contents of the receptacle has been consumed.

It will be seen from the foregoing description that after the piston 9 has reached the end of its inward movement which is indicated by the extent of the portion of its stem 3 exteriorly of the member 2, the lubricating action is continued during a period sufii ciently long to obviate the necessity of stopping the engine to which the lubricator is applied, before the regular time set for that purpose.

To definitely indicate the quantity of lubricant contained in the receptacle by the position of the piston member 3, the latter has upon the exterior surface of its stem a graduated scale as shown at- 17 in F ig. 1. After the piston member has reached the end of its feeding motion, the quantity of lubricant remaining in the receptacle is indicated by the position of the piston 13 which may be readily observed through the open end of the tubular member in which it has its movement.

Having thus described my invention what I claim and desire ent is: 1. In a lubricator, an oil-receptacle composed of telescoping members, the inner member having a piston within the outer member and a relatively large, open-ended hollow stem the interior of which constitutes a substantial portion of the receptacle, and the outer member havinga-neck of reduced diameter through 'which said stem extends, a spring between said piston and saidneck for moving the inner member against the resistance of a fluid-body inthe receptacle, a secondary piston in the hollow stem of the inner member, and a spring of less strength than the first-mentioned spr ng, for moving said secondary piston against the resistance of a fluid-body in the receptacle, after the inner member has reac ed the end of its inward movement.

2. In a. lubricator, an oil-receptacle composed of telescoping members, the inner member having a piston within the outer member and a relatively large hollow stem the interior of to secure by Letters-Patwhich constitutes a substantial portion of the receptacle, and the outer member having a neck of reduced diameter through which said stem extends, a spring between said piston and said neck for moving the inner member against the resistance of a fluid-body in the receptacle, piston in the hollowstem'of the inner member, and a spring of less strength than the first-mentioned spring, for moving said sec ondary piston against the resistance of a fluid-body in thereceptacle after the inner member has reached the end of its inward movement.

3. In a lubricator, an oil-receptacle composed of telescoping members, the inner member having a piston within the outer member and a relatively large hollow stem the interior of which constitutes a substantial portion of the receptacle, and the outer member having a neck of reduced diameter through which said stem extends, a spring between said piston and said neck for moving the inner member against the resistance of a fiuid-body in the receptacle, a secondary piston in the hollow stem of the inner member, and a spring of less strength than the first mentioned spring, engaging said second piston and attached to a relatively fixed part of the;stem for moving said secondary piston against the resistance of a fluid-body in the receptacle after the inner member has reached the end of its inward movement.

4. In a lubricator an oil-receptacle composed of telescoping members, the inner member having a piston within the outer member and a relatively large, open-ended hollow stem the interior of which constitutes a substantial portion of the receptacle, and the outer member having a neck of reduced diameter through which said stem extends, a spring between. said piston and said neck for moving the inner member against the resistance of a fluid-body in the receptacle, a secondary piston in the hollow stem of the inner member, a pin disposed transversely of said stem, and a spring of less strength than the first-mentioned spring, attached to said pin and engaging the secondary piston for moving the same against the resistance of a fluid-body in the receptacle, after the inner member has reached the end of its inward movement. v

In testimony whereof I have aflixed my signature in presence of two witnesses. 1

JOHN MORRO'W. lVitnesses:

L. RHoAnEs, G. J. RoLLANDE'r.

a secondary 

